903406 Nordyne M1MB077 BRNR assembly
903406 Nordyne M1MB077 BRNR assembly
The 903406 is the genuine Nordyne M1MB077 burner assembly designed for natural-gas furnaces and packaged units. This fully assembled module includes the gas manifold, burner tubes, pilot mounting bracket, flame-sensor mounting pad, gaskets, and all necessary hardware. Factory-assembled and leak-tested, it ensures precise fuel delivery, reliable ignition, and optimal combustion throughout thousands of heat cycles.
Key Features
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Factory-assembled manifold and burner tubes for exact OEM alignment
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Aluminized-steel burners and manifold resist corrosion and high temperatures
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Integrated pilot bracket and flame-sensor mounting pad
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Includes pre-cut gaskets and mounting screws for airtight fit
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Pressure-tested at the factory to prevent leaks
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Designed for natural-gas service (LP conversion kits available)
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 903406 (also sold as M1MB077) |
| Components Included | Manifold, burners, pilot bracket, sensor pad, gaskets, hardware |
| Fuel Type | Natural gas (LP convertible with kit) |
| Factory Manifold Pressure | 3.5 inches W.C. (typical) |
| Burner Tube Material | Aluminized steel |
| Housing Material | Galvanized steel mounting plate |
| Dimensions (L × W × H) | 11.1 in × 11 in × 10.55 in |
| Weight | 4.63 lb (2.10 kg) |
| Origin | Mexico |
Compatibility
This OEM burner assembly directly replaces Nordyne part 903406/M1MB077 and fits a broad range of Nordyne- and Coleman-branded gas furnaces and packaged rooftop units:
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Nordyne / Coleman / Comfortmaker
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Furnace series: M1MB, 38MJ, 42MV, FMPC, FMPM
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Packaged units: CPN, CNB, CKL lines
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Amana / Ducane
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Furnace series: AFG4, FGL4, FG4
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Rooftop models: RG4, SH4
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